Paul wonders if 2-factor authentication with SMS Messaging is all that secure. He uses 2FA using a voice call system. Is that secure? Leo says that 2 Factor is the most secure way to protect your data. But there are various ways to get it. Text message is the easiest, and it's better than nothing, but an authenticator like Authy or a hardware authenticator is far more secure. Ubikey is the most secure. An app authenticator, like Authy or Google Authenticator, would be the next most secure. Text messaging is the least secure because of SIM jacking. But the sim jacker would have to target you, and that isn't very likely unless you're a high profile person.